Body’s temperature dropped? Not exactly (2,2)
I believe the answer is:
or so
'not exactly' is the definition.
(I've seen this in another clue)
'body's temperature dropped?' is the wordplay.
'body' becomes 'torso' (a person's middle).
'temperature' becomes 't' (abbreviation).
'dropped?' indicates named letters should be taken away (some letters are excluded or dropped).
'torso' with 't' taken out is 'OR SO'.
(Other definitions for or so that I've seen before include "Approximately" , "Something like" , "More or less" , "roughly" .)